| Idar-Oberstein to Costessey | 333.32 mi (536.43 km) |
| Idar-Oberstein to Cottingham | 433.58 mi (697.78 km) |
| Idar-Oberstein to Coulsdon | 345.57 mi (556.14 km) |
| Idar-Oberstein to Coventry | 425.69 mi (685.08 km) |
| Idar-Oberstein to Cowdenbeath | 625.47 mi (1,006.60 km) |
| Idar-Oberstein to Cowes | 387.25 mi (623.22 km) |
| Idar-Oberstein to Cowley | 363.78 mi (585.44 km) |
| Idar-Oberstein to Cowley | 398.03 mi (640.57 km) |
| Idar-Oberstein to Cramlington | 526.90 mi (847.97 km) |
| Idar-Oberstein to Cranleigh | 356.63 mi (573.94 km) |
| Idar-Oberstein to Crawley | 343.91 mi (553.47 km) |
| Idar-Oberstein to Crayford | 334.98 mi (539.09 km) |
| Idar-Oberstein to Crewe | 480.56 mi (773.39 km) |
| Idar-Oberstein to Crigglestone | 465.44 mi (749.05 km) |
| Idar-Oberstein to Cromer | 341.64 mi (549.82 km) |
